Gravitational scattering of solitonic boson stars: Analytics vs Numerics

Posted by klaurent Cambridge

Kavli Affiliate: Ulrich Sperhake | Summary:We study the scattering of boson-star binaries, taking into account three effects: point-mass gravitational, tidal, and short-range scalar-field interactions. We compare analytic results to the scattering angle extracted from four sequences of numerical-relativity simulations at fixed energy and varying impact parameter. The very good agreement exhibits the attractive (repulsive) effect […]


Continue.. Gravitational scattering of solitonic boson stars: Analytics vs Numerics

XRISM Observations of Accretion Disk Corona in Cyg X-2

Posted by klaurent MIT

Kavli Affiliate: Eric Miller | Summary:We present the high-resolution X-ray spectrum of the Z-source Cygnus X-2, obtained with X-Ray Imaging and Spectroscopy Mission (XRISM). The observations have enabled a precise characterization of the Fe-K emission lines from the accretion disk corona (ADC) and a possible detection of an ultra-fast outflow (UFO). The ADC component has […]


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Analysis of Angular-Differential Post-Processing Algorithms for Exoplanet Direct Detection with a Photonic Lantern Nuller

Posted by klaurent Caltech

Kavli Affiliate: Dimitri Mawet| Summary:Exoplanet research is essential for understanding planetary formation and the potential for life beyond our solar system. The direct imaging method captures exoplanet light while minimizing light from the host star. This is conventionally achieved with a coronagraph, which allows detailed characterization of planetary atmospheres and features. The Photonic Lantern Nuller […]


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Mechanistic and Antigenic Boundaries of Henipavirus and Parahenipavirus Glycoproteins

Posted by dbos UCSF

Endothelial type I interferon signaling modulates the vascular response to ischemic brain injury Kavli Affiliate: Robert Edwards | Authors: Aaron J May, Muralikrishna Lella, Jared Lindenberger, Alex Berkman, Ujjwal Kumar, Moumita Dutta, Maggie Barr, Rob Parks, Xiaozhi Lu, Madison Berry, Amanda Newman, Xiao Huang, Arpita Mrigwani, Kijun Song, Victor Ilevbare, Salam Sammour, Chan Soo Park, […]


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A lateralized pathway for associating nutrients with flavors

Posted by dbos UCSF

Endothelial type I interferon signaling modulates the vascular response to ischemic brain injury Kavli Affiliate: Zachary Knight | Authors: James C.R. Grove, Anna M Hakimi, Queenie Li, Jingkun Zhang, Heiko Backes, Bojana Kuzmanovic, Jaewon Choi, Violeta Ubadiah, Longhui Qiu, Zhengya Liu, Dana M. Small, Marc Tittgemeyer and Zachary A Knight | Summary: Animals learn about […]


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First Astrometric Limits on Binary Planets and Exomoons orbiting $β$ Pictoris b

Posted by klaurent MIT

Kavli Affiliate: Andrew Vanderburg | Summary:The search for exomoons, or moons in other star systems, has attracted significant interest in recent years, driven both by advancements in detection sensitivity and by the expanding population of known exoplanets. The $β$ Pictoris system is a particularly favorable target, as its proximity and directly imaged planets allow for […]


Continue.. First Astrometric Limits on Binary Planets and Exomoons orbiting $β$ Pictoris b

First Astrometric Limits on Binary Planets and Exomoons orbiting $β$ Pictoris b

Posted by klaurent MIT

Kavli Affiliate: Andrew Vanderburg | Summary:The search for exomoons, or moons in other star systems, has attracted significant interest in recent years, driven both by advancements in detection sensitivity and by the expanding population of known exoplanets. The $β$ Pictoris system is a particularly favorable target, as its proximity and directly imaged planets allow for […]


Continue.. First Astrometric Limits on Binary Planets and Exomoons orbiting $β$ Pictoris b

Role of prompt cusps in driving the core collapse of SIDM halos

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:Prompt cusps (PCs) form from the direct collapse of overdensities in the early Universe, reside at the center of every dark matter halo, and have density profiles steeper than $r^-1$ NFW cusps. Using a suite of high-resolution N-body simulations, we study the evolution of isolated halos in self-interacting dark matter […]


Continue.. Role of prompt cusps in driving the core collapse of SIDM halos

Role of prompt cusps in driving the core collapse of SIDM halos

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:Prompt cusps (PCs) form from the direct collapse of overdensities in the early Universe, reside at the center of every dark matter halo, and have density profiles steeper than $r^-1$ NFW cusps. Using a suite of high-resolution N-body simulations, we study the evolution of isolated halos in self-interacting dark matter […]


Continue.. Role of prompt cusps in driving the core collapse of SIDM halos

The DREAMS Project: A New Suite of 1,024 Simulations to Contextualize the Milky Way and Assess Physics Uncertainties

Posted by klaurent MIT

Kavli Affiliate: Mark Vogelsberger | Summary:We introduce a new suite of 1,024 cosmological and hydrodynamical zoom-in simulations of Milky Way-mass halos, run with Cold Dark Matter, as part of the DREAMS Project. Each simulation in the suite has a unique set of initial conditions and combination of cosmological and astrophysical parameters. The suite is designed […]


Continue.. The DREAMS Project: A New Suite of 1,024 Simulations to Contextualize the Milky Way and Assess Physics Uncertainties